Calculate to the nearest degree the measure of . 3.A group of bacteria doubles every second until it reaches the maximum population. If it reaches the maximum population in 1 minute, how long will it take to reach half the maximum population? 4.There are five integers. The median of these numbers is 25, while the mode of these numbers is 28, and the mean is 22. If ais the smallest number, what are the possible values of a5.Quadrilateral ABCDis drawn with a diagonal connecting AC. If AB= 4, BC= 9, CD= 3, and DA= 5, what is the interval for all possible lengths ACDon’t forget to try these past contests! Go to for the link. ABCD3 5 4 9 ? ? Centre for Education in Mathematics and Computing Faculty of Mathematics University of Waterloo Waterloo, ON Canada N2L 3G1 TRY THIS! Past Gauss Contests C
For more activities and resources from the University of Waterloo’s Faculty of Mathematics, please visit . 1 Name: _______________________ E XTRA C HALLENGES This resource may be copied in its entirety, but is not to be used for commercial purposes without permission from the Centre for Education in Mathematics and Computing, University of Waterloo.
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- Summer '08